I have a 11day old calf,normal birth,got right up nursed,lively. let him and mama out in paddock after 5 dys old,picked grass and hay ran around,but while lying down at rest he has rapid breathing, not labored breathing, just rapid breathing. on the 8th day out, at 70 degrees he ran around then nursed his mama, right away hanging his tongue out foaming at the mouth,panting. Got them in the barn temp was 104. took about 6 hrs for his temp to come down and not hanging tongue out but still panting. took that long to get hold of a vet on Sat.couldn't come out, picked up meds. this is the 11th day he did it again. now waiting on vet to come. I was wondering if anyone has and ideas or has had this happen, Thank you greatly appreciated